APA (7th ed.) Citation

Geological Survey (U.S.) & Colorado. Department of Local Affairs. Division of Planning. (1980). Washington County, Colorado. Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Colorado. Department of Local Affairs. Division of Planning. Washington County, Colorado. Reston, Va.: Interior, Geological Survey, 1980.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Colorado. Department of Local Affairs. Division of Planning. Washington County, Colorado. Interior, Geological Survey, 1980.